I don't know much about them, please see actual pictures
1. Heavy damage - see pics to determine if it could be salvaged
cutting head looks to be 3/4" attaching part is 1/2" 10" long ( measured with tape)
2.Looks undamaged - used - 3 step-ups on shaft.
cutting head looks to be 1" attaching part is 1/2" 10" long ( measured with tape)
3. Looks used, end is sealed by wax probably it was recently sharpened
cutting head looks to be 7/8" attaching part is 1/2" about 8" long ( measured with tape)